15 results
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
Algorithm for nodular ... pattern The algorithm ... perilymphatic, random ... Radiology #Pulmonary #HRCT ... #CTChest #NodularPattern
The distribution of nodules shown on HRCT is the most important factor in making an accurate
nodules shown on HRCT ... in the nodular pattern ... Random distribution ... #NodularPattern ... #Nodular #Pattern
Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
Central distribution ... Peripheral distribution ... organizing pneumonia (COP ... ), chronic eosinophilic ... Radiology #Pulmonary #HRCT
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Nodular pattern ... Miliary TB: random ... perilymphatic distribution ... Clinical #Radiology #HRCT ... CTChest #Nodular #Pattern
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
with a nodular pattern ... Miliary TB: random ... perilymphatic distribution ... perilymphatic distribution ... #NodularPattern
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
CXR: Peripheral distribution ... consolidation and GG pattern ... , cavities • HRCT ... Anti-dsDNA, ANCA COP ... organizing pneumonia, Chronic
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
Chronic hypersensitivity ... pneumonitis are: Mosaic pattern ... in a mid zone distribution ... The HRCT shows a ... mosaic pattern
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT Patterns ... Nodular: • Random ... Acute Eos PNA • Chronic ... , Chronic Eos PNA ... Sarcoidosis, NSIP, COP
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
Chronic diseases ... to look at the pattern ... of distribution ... more than one pattern ... called cryptogenic (COP
Approach to the diagnosis of chronic hypersensitivity pneumonitis. 
*Consider additional test: bronchoscopy with bronchoalveolar lavage, transbronchial
the diagnosis of chronic ... cHP = chronic hypersensitivity ... pneumonitis; HRCT ... pulmonary #diagnosis #algorithm